I have the following error and searched many answers from stack overflow and no luck! any one please guide me to right direction to fix this issue?
I have followed this tutorial http://learn.ionicframework.com/videos/windows-android/
Installed "android-19" target
The error is to do with not having the SDK Platform at API level 19 installed. Your screen shot only shows the SDK Build Tool revisions installed. You need to check the SDK versions.
What you installed is build-tools 19. The error means you should install SDK platform 19.